Hi All,
I have been flying my bird for more than five years with Bob and Russell's
design for a rudder to canopy overhead vents.
I have to say its a great idea, that the fronto-lateral surface of the
rudder should be a nice high pressure area to feed the duct, but in
practice, in cruise, the air flow from these vents is barely perceptible.
Far more ventilation occurs from the open armrest/fuel filter tunnel,
probably from the flap slots (which should be negative pressure at
first look!)
If I felt like an improvement in this department, I would cover the
external naca vent and just put a rotating vent in the door window.
Just my opinion!
Ira
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Ira N224XS
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http://forums.matronics.com/viewtopic.php?p=278001#278001
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